Window-lock.



MQT. STERNBERG. WINDOW LOOK.

APPLIGATION FILED MAY 29, 1914.

1,1 Patented July 14,1914.

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'I Wir| 4i 1 MM MOSES J. STERNBERG, 0F NEW YORK, N.

WINDOW-LOCK.

incassa.

Specification of Letters Patent.

Application filed May 29, 1914.

Patented July fa, 1914i.

Serial No. 841,746..

To all whom it may concern Be it known that I, Moens J. STERNBERG, a. citizen of the United States, residing at the city of New York, in the borough .of Brooklyn and State of New York, have 1nvented certain new and useful lmprovements in 1lF/*indow-Locks, of which the following L full, clear, and exact description.

rl`his invention relates to means for fastening windows and has special reference to a device which in addition to positively locking both sashes of a window in closed position7 will lock one sash of a window in a partially open position, thus providing for the ventilation of sleeping rooms the windows of which are easily accessible to thieves.

My invention consists of a slidable bolt pivotally mounted on the window frame, in combination with a plurality of ymetallic sockets inset in the upper sash of the window, such sockets being adapted to receive one end of the slidable bolt.

The object of my invent-ion is to provide a device of this character which will be cheapto manufacture, simple to operate, not displeasing in appearance which will be dili'icult of manipulation from the outside, and will not interfere with curtains or hangings at the window.

In the drawings which form a part hereof and in which like reference characters designate like parts throughout the several views: Figure 1 is an elevation of a two-sash window of usual typey having my invention applied thereto, showing the lower sash locked 1n closed position and the upper sash locked in a partially open posit-ion. Fig. 2 is a view taken on the line 2-2 of Fig. 1; Fig. 3 is a view taken on the line 3 3 of Fig. 2; Fig. 4l is a detail view of one of the sockets showing. the locking bolt in position therein as viewed from the line 4.-4 of Fig. 2, and Fig. 5 is a view of the locking rod and its supporting bracket in inoperative position.

Referring to Fig. 1, the window frame 5 has slidably mounted therein in the usual manner the two sashes 6 and 7. Attached to the jamb 8 by screws 9 is a base plate 10 to which is attached by the pivot 11 the bracket 12 which is provided with two arms 13 and 14 which arms have alined holes, one of which is indicated at 15, Fig. 3, for the reception of the bolt 16.

Attached to the upper sash 6 is the plate 17 which is provided with integral transverse cylindrical portions 18 and 19 which are separated by a short space and are inset into the upper sash as shown in Fig. 2. These cylindrical portions constitute sockets. for the reception of the end of bolt 16.

Each of the sockets 18 and 19 is provided with a bayonet slot in its side, as shown at 20, and bolt 16 is provided with lugs 21 and 22 which engage said slot when the end of the bolt is seated in a socket. Lug 21 slides :freely in the bayonet slot at all times, but lug 22 is provided on one side with a cam face as shown at 23 so that when the end of the bolt 16 has been seated in a socket, the pushing of the bolt slightly farther into its socket will jam the cam face 23 against the corner 2li, thus increasing the frictional engagement between the bolt and socket.

When out of locking engagement the bolt 16 occupies the position show-n in Fig. 5, swinging to a perpendicular position by gravity when pulled tov its outer limit, by reason of the pivotal engagement of bracket 12 with the plate 10. In this position it is inconspicuous and will not interfere with the curtains or draperies of the window.

When bolt 16 is pulled outwardly, the lug 22 has another function in that it acts as a limit stop, being so positioned on4 the bolt that when it engages the arm 14 of the bracket, the inner end of bolt 16 will be flush with the outer surface of arm 13, the hole in arm 13 being of such a shape that lug 22 will freely pass therethrough when said lug has been brought opposite notch 25, and lug 2l seating in said notch when the bolt has been pulled to its outer limit, so that the bolt will always be positioned for operation with respect to the bracket.

When it is desired to lock the window, the bolt is grasped and pushed upwardly until the upper end of lug 22 engages arm 13. The bolt is then rotated to the left until lug 22 registers with notch 25, when the bolt may be freely passed through its bracket. The bolt may then be swung to a horizontal position, pushed across the top of the lower sash 7 and thrust into one or the other of thesockets 18 or 19,depending upon whether it is desired to lock the upper sash in partially open or in a closed position. The holes in plate 17 leading to the sockets are pro-A vided with notches as at 26 which permit the lugs to enter the bayonet slots.

As shown, the bolt is mounted at a point on the jamb just above the upper edge of the lower sash when the same is in closed position. l/Vhen so mounted, the engagement of the bolt with either of its socketsin the upper sash, will result in they locking of the lower sash in closed position. If desired, however, may mount the bolt a limited distance above the lower sash so that the same may be freely moved up and down at all times within the limits prescribed by the bolt when in locking position.

Obviously l may provide a number of the locking sockets inthe upper sash, but ordinarily two will'be found sufficient.

The provision of the cam face 23 on lug 22, l regard as important since l thereby obtain a frictional engagement between the boltand socket which will prevent the bolt `from being rattled out of locking engage# ment by. the wind or by the vibration caused by passing cars or vehicles, and will also materially add to the vdifficulty ofmanipulation from without by\burglars. l

l claim:y

l. A window fastener comprising a socket in sash, a bolt adapted to engage therewith, and a pivoted bracket in which Lsaid bolt is carried and adapted to slide,l for the purpose set forth..

2. A window fastener comprising a bolt, 'Y a bracket pivoted to awindow frame. and in whichsaid bolt slides, and a'plurality of "the bracket.

sockets in the upper sash, the bolt passing freely over the top of the lowerJ sash and engaging the sockets in the upper sash.

3. A window fastener comprising a bolt and 'a bracket in which the bolt is adapted to slide, said bracket being pivotally mounted and the bolt provided with a. stop adapted to prevent the escape ofthe bolt from 4. A window fastener comprising a bolt, a cylindrical metallic socket adaptedY to be fixed in the vsash and having a longitudinal notch in its wall, said bolt provided with a cam lug adapted rto frictionally engage said notch for thev purpose set forth. 5. A window fastener comprising a bolt and a metallic socket, one adapted to bev fixed to the frame and the other to the sash,

said Socket having a bayonet slot and thebolt having two lugs adaptedv to occupy difkferent parts of said slot one `of said lugs adapted to make frictional engagement with the slot as set forth.

ln'witness whereof, l subscribe my signature, in the presence of two. witnesses. n

Mosns J; slrnnn'nnne;

Witnesses:

-VVALDO M. CHAPIN,

JosnrH BUCKLEY. j

Copies of this patent may be obtained for ve oents'each, by addressing the Commissioner of Yatens,

` Washington, D. C. v 

